Thread-extracting needle



Dec. 2, 1930. s. PICARD THREAD EXTRACTING NEEDLE Y Filed March 20, 1929Patented Dec. 2, 1930 UNITED sTATEs. -VPATENI OFFICE s'rANIsLAs PICARD,or PROVIDENCE, RHoDEIsLaND, AssIGNoR fro D. B. a R. KNIGHT coRroRAfrIoN,or PROVIDENCE, RHODE ISLAND, A CoRroRATIoN oIvRIIoDE ISLANDTHREAD-EXTRACTINGNEEDLE V Application inea March 20, i929. serial No.348,512.. I

spreading of the threads which it is desired should remain in the fabricby forming the needle with a dimension Vat right angles to the notchededges sufficient to spread the threads as the needle is passed throughthe fabric.

With these and other objects in view, the

invention consists of certain novel features of construction, as will bemore fully described, and particularly pointed out in the appendedclaims.

1n the accompanying drawings Fig. 1 is a frontv elevation of the needle.

Fig. 2 is a side elevation at right angles to that shown in Fig. 1 ofthe needle.

Fig. 3 is a section of a fragmental portion of the needle showing thesame as entering the fabric from which the threads are being removed.

Fig. 4 is a top plan view of the fabric with the needle in sectionshowing its action upon the threads as it is initially passed into thefabric.

Fig. 5 is a view similar to Figs showing the fabric after the needle hasbeen passed through the same a plurality of times and the threadsdeflected with portions of the threads to be removed cut from thefabric.

Fig. 6 is a section of the fabric showing the needle in position andtaken substantially on line 6--6 of Fig. 5.

Fig. 7 is a section on line 7-7 of Fig. 5.

Fig. 8 is a section on line 8-8 of Fig. 3 showing the shape of theneedle in cross section.

It is found in removing threads for hemstitching that as the threads tobe deflected downwardly are received in notches in the needle that oftenthe threads which should remain in the fabric are caught by thesenotches andbrolren o r ruptured and in orderl to avoid this undesirableresult, Ihave provided anecdle which has a dimension at right angles toVthe linejoining the opposite notched edges of the needleA Vsuch that itwill spread the `threads which are to remain in the fabric and .preventtheir catching 1n the notches of the needle andbeing ruptured orbrokenthereby; and the following is a detailed description of thepresent embodiment of the inven- Etion illustrating the "preferred meansby Ywhich these advantageous results may be accomplished. l Withreference to the drawings, 10 desig- -nates `theslianlrof the threadextracting needle, which is substantially circular in cross Ysection andadapted to be held in the jaws of the reciprocating head of a threadextracting machine. This needle is tapered at its end to provide a point11 the shape of the cross I1 section of the taper being square, asillustrated in Fig. 8, with the width of the needle substantially thatof the width of the threads to be extracted from the cloth.

Gn two opposite corners 20 yof the needle I have provided a series ofnotches 12, 13 and 14 to engage the threads 15, 16 and 17 at either sideof the center line 28 of the fabric,

' as illustrated in Fig. 5, to force these threads downwardly, asillustrated in Figs. G and 7, into the path of the cutter or severingmeans for removing them from the cloth.

The edges 18 which are at right angles to the notched edges of theneedle serve to ention of these threads downwardly; as the lgoods arefed forwardly and the subsequent strokes force the broken ends of thethreads downwardly, as illustrated-in Fig. 7, to be severed by thecutter and so on throughout the length of the fabric to remove thethreads .A

15, 16 and 17 on each side of the center line along which the point l1of the needle acts.

I have found it of advantage to provide a plurality of notches on theneedle so that should one notch fail to pick up the thread to be removeda subsequent notch along the taper of the needle Will be engaged by thisthread to deiect it into the path of the cutter which acts upon thecloth in the usual manner of the thread removing machine.

The foregoing description is directed solely towards the constructionillustrated, but l desire it to be understood that I reserve theprivilege of resorting to all the mechanical changes to which the deviceis susceptible, the invention being defined and limited only by theterms of thc appended claiins.

I claiin:

1. A thread extracting` needle having a tapered fabric engaging endportion, two diainetrically vopposite thread engaging edges havingspaced notches therein, and diametrically opposite sinooth threadengaging edges positioned between the said notched edges.

2. A thread extracting needle having a tapered fabric engaging endportion of square cross-section, two diametrically opposite edges havingspaced notches therein, the other two edges being smooth. i

In testimony whereof I afx inv sifnature.

sTANIsLAs Pionn.

